[prohornblower]

Watch Bonds' arms...they don't do much moving. He keeps his shoulders, elbows, and hands in the same position relative to the bat until point of contact when his hands turn over obv. for the follow-through.

If you were to connect the dots and draw a box from left hand to left elbow, to left shoulder, to right shoulder, down to right elbow and to right hand...the shape sort of resembles home plate. It's like 5 rigid points, and the general rigid shape doesn't change in his swing, which is what gives him superhuman "top hand" strength. The only thing that changes is as he's pulling the bat through, his back elbow drops a bit and his front elbow rises a bit so he can get the bat down through the zone.

Watch his swing, his front leg "plants" allowing a firm rotational point for his hips and as his hips twist around his leg his rigid arms are coming through the zone and he just mashes it. I'm sure he also has very strong wrists and hands which allow him to remain firm at point of contact.

Chase Utley's got sick wrist and hand strength at contact.